1. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
2. NYU-ECNU Joint Physics Research Institute, East China Normal University, Shanghai 200062, China
3. Department of Theoretical Physics, University of New South Wales, Sydney 2052, Australia
4. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
5. Department of Physics, Lanzhou University, Lanzhou 730000, China
6. National Key Laboratory of Shock Wave and Detonation Physics, Mianyang 621900, Sichuan, China